* {
  margin: 0;
  padding: 0;
}

body {
	font-family:  Arial, tahoma, Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "Heiti SC", "WenQuanYi Micro Hei", sans-serif;
	font-size:	15px;
	tab-size: 4;
	margin: 0;
	padding: 0;
	color: #000;
	background-color:#FFFFFF;
}

.size14 {font-size: 14px}
.size12{font-size: 12px}

#content h1, h2, h3, h4, h5, h6{
	margin-top: 5px;	
	margin-bottom: 5px;	
	padding-right: 15px;
	padding-left: 2px; 
}

p {
	margin-top: 5px;	
	margin-bottom: 5px;	
 	padding-right: 2em;
	/*padding-left: 15px;  */
	text-indent: 2em;
}
li{
	margin-top: 5px;	
	margin-bottom: 5px;	
}

h4 a{ /* 把h4标题下"<top>"的字体变成普通字体 */
	font-weight: normal;
}

a img { 
	border: none;
}

a:link {
	color:  #00F; /* 42413C */
	text-decoration: underline; 
}

a:visited {
	color: #6E6C64;
	text-decoration: underline;
}

a:hover, a:active, a:focus { 
	text-decoration: none;
}

#container {
	width: 1200px;
	/* background: url("/styles/body_bg.png") repeat-y scroll left top transparent; */
	margin: 0 auto;
	border-style: solid;
	overflow: hidden;
	border-color: #A2A191;
	border-width: 0 1px;

	/* background: #FFFFFF; */
	/* padding-left: calc(100vw - 100%); */
}

#sidebar {
	/* position: absolute; */
	float: left;
	width: 150px;
	background: #EEEEEE;
	color: #666;
	padding: 0ex 0 0ex 0;
	/* display: inline; */
	margin-bottom: 3px;	
/*     margin-block-start: 0.0em;
    margin-block-end: 0.20em;	 */
}

#contentSidebar li {
  display: inline;
}

#contentSidebar li a {
  display: block;
  float: left;
  padding: .5em 1em;
}

ul#nav {
	border-bottom: 1px dashed  #666; 
	margin-bottom: 0 auto;
	color: #000;
}

ul#nav li {
	border-bottom: 1px dashed   #666;
	color: #000;
	
	list-style-type:none;
}

ul#nav a, ul#nav a:visited{ 
	padding: 5px 0px 5px 20px; 
	display: block; 
	width: 130px;  
	text-decoration: none;
	background: #EEEEEE;
	color: #000;
}


ul#nav a:hover, ul#nav a:active, ul#nav a:focus { 
  color: #B41F24;
  background:  #AAAAAA;
  text-decoration: none;
}

#content {
	width: 1050px;
	display: block;
	float: left;
	
	margin-top: 5px;	
	margin-bottom: 5px;	
 	padding-right: 15px;
	padding-left: 15px;  	
}

#content ul, #content ol { 
	/* padding: 0 5px 0px 25px;  *//*上 右 下 左*/
	margin-top: 0;	
	margin-bottom: 10px;	
 	padding-right: 0px;
	padding-left: 30px;  
}


#visit{
	text-align: center;
}

#footer {
	padding: 10px 0;
	background: #EEEEEE; 
	position: relative;
	clear: both;

  border-color: #C1C1B5;
  border-style: solid;
  border-width: 1px 1 3px;
  color: #000000;
}

.courseTab{
	border: 1px solid black;
	border-collapse: collapse;
	margin:0 auto;
	font-size: 14px
}
.courseTab .regRow td{
	background-color: #ddd;	
	
}

.courseTab td, th{
	border: 1px solid black;
	padding: 2px 2px 2px 4px;
}


.centerTab td, th{
	text-align: center;
}
td.lefTab {
	text-align: left;
}

.even		{ background:#eee;}  /* 偶数行样式*/
.odd		{ background:#FFFFEE;}  /* 奇数行样式*/
.selected		{ background:#FF6500;color:#fff;}

.invisible {visibility:hidden}


#mainbody {
 	width: 1200px;
	margin: 0 auto;
	border-style: solid;
	overflow: hidden;
	border-color: #A2A191;
	border-width: 0 1px;	
	display: flex;
}

#header {
 	width: 1200px;
	color: #FFFFFF; 
	background: #337AB7;
	margin: 0  auto; 
	text-align:  center;
	padding: 1ex 0 1ex 0;
	
    display: block;
    font-size: 1.5em;
    margin-block-start: 0.83em;
    margin-block-end: 0.05em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
	
    font-weight: bold;
	margin-top: 0;	 
	padding-right: 15px;
	padding-left: 15px; 		
}

html {
  overflow-x: hidden;
  overflow-y: scroll;
}

.div_image
{ 
	width:1020px; 
	height:515px; 
	border:1px solid black; 
} 

.div_image img 
{ 
	max-width: 100%; 
	max-height: 100%; 
	display: block; 
	margin: auto; 
	
}